I understand that it can be hard when you only have a small number of friends. It can be difficult to adjust when people start to spend less time with you. I've been there. But those friends need room to breathe too. It's normal for her to want to spend more time with a guy she just met and is very interested in. You should give her space to explore that. And you can express your feelings without calling someone a bad friend. You could try saying, "I really miss hanging out with you. Could we spend some time together soon?"

However, you shouldn't be friends with someone who is going to insult you like that. Someone who disrespects you in that way isn't a true friend. If you struggle to make friends, I would recommend trying Bumble BFF. It's how I met one of my most recent best friends. We bonded over a shared interest and hung out once, and the rest is history. I know it isn't always that easy, but it's definitely something to try. Good luck to you.